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Method and system for providing reliability and availability in a distributed component object model (DCOM) object oriented system

a component object model and object oriented technology, applied in the direction of instruments, error detection/correction, computing, etc., can solve the problems of resource sharing and cross-operating system object interaction, difficult to anticipate interconnections, and difficulty in task division between different processor resources, so as to improve the reliability and availability of distributed component object models.

Inactive Publication Date: 2006-07-25
AMERICAN TELEPHONE & TELEGRAPH CO
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Benefits of technology

[0017]The invention provides a method and system for improved reliability and availability of distributed component object models.

Problems solved by technology

While effective in typical client server architectures, this division of tasks between different processor resources becomes difficult when multiple client server systems are inter-connected.
The interconnections may be dynamic and therefore not easily anticipated when the application is built.
Further, different systems may operate with different operating systems, making resource sharing and cross-operating system object interaction difficult.
However, the dynamic behavior of DCOM introduces new challenges for building reliable distributed applications.
As a result, although the design of the DCOM architecture is quite extensible (that is, reasonable defaults are provided for common cases, but can be overwritten through flexible programming hooks), it often involves non-intuitive programming hacks to provide the functionality required in a client / server environment.

Method used

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  • Method and system for providing reliability and availability in a distributed component object model (DCOM) object oriented system
  • Method and system for providing reliability and availability in a distributed component object model (DCOM) object oriented system
  • Method and system for providing reliability and availability in a distributed component object model (DCOM) object oriented system

Examples

Experimental program
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Embodiment Construction

A. DISTRIBUTED CLIENT SERVER ARCHITECTURE

[0039]Refer first to FIG. 2, which illustrates generic computer circuitry representative both of clients and servers. The depicted computer system includes a central-processing unit 15, which performs operations on and interacts with a main system memory 17 and components thereof. System memory 17 typically includes volatile or random-access memory (RAM) for temporary storage of information, buffers, and portions of the computer's basic operating system. The system also includes at least one mass storage device 19, such as a hard disk and / or CD-ROM drive. All components of the system communicate over a bi-directional system bus 21.

[0040]While clients and servers bear similar hardware configurations at this level of generality, their relative processing and data-storage capabilities are naturally quite different. A client may be, for example, a personal computer running the Windows graphical user interface supplied by Microsoft Corp., while th...

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Abstract

A method and system for improving reliability and availability in distributed computer applications. The method and system may be used in the context of primary-backup, failover recovery. The method involves software-fault tolerance using technique of structured storage; referral components; and wrappers. The method and system exploit the platform and operating system independence of component object models to allow the dynamic linkage of different component objects, the objects being resident on different inter-linked machines, based on the application requirements at any given point in time.

Description

[0001]This invention claims the benefit to earlier filed provisional application Ser. No. 60 / 057,358, filed Aug. 25, 1997, titled: “RELIABILITY AND AVAILABILITY ISSUES IN DISTRIBUTED COMPONENT OBJECT MODEL (DCOM)”FIELD OF THE INVENTION[0002]This invention relates to client / server Distributed Component Object Model software architectures, and in particular to systems and methods for ensuring reliability, availability and recovery of Component Objects during and after failures in the distributed system.BACKGROUND OF THE INVENTION[0003]One widely accepted computer architecture, developed specifically to accommodate the “distributed computing” environment, is the client-server model. In its purest form, a client-server system consists of a central server (sometimes called the host), which is a very powerful computer (or cluster of computers that behaves as a single computer) that services the requests of a large number of smaller computers, or clients, that connect to it. The client com...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06F11/00
CPCG06F11/1479G06F11/1438G06F11/2023G06F11/1489G06F11/1487
Inventor WANG, YI-MIN
Owner AMERICAN TELEPHONE & TELEGRAPH CO
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